Add product creates a bug when user is not logged in

[KarimChabrak]

When clicking on "add you product", I get an error message below. e.g. https://community.coinsence.org/space/beyond-borders/xcoin/marketplace/overview?marketplaceId=28 Normally i should get sign in/login popup like in the case of adding project.

{ "url": "/space/beyond-borders/xcoin/product/new?marketplaceId=28", "status": 500, "response": "

PHP Notice 'yii\base\ErrorException' with message 'Trying to get property 'id' of non-object' \n\nin /var/www/coinsence/protected/modules/xcoin/controllers/ProductController.php:61\n\nStack trace:\n#0 /var/www/coinsence/protected/modules/xcoin/controllers/ProductController.php(61): yii\base\ErrorHandler->handleError(8, 'Trying to get p...', '/var/www/coinse...', 61, Array)\n#1 [internal function]: humhub\modules\xcoin\controllers\ProductControl...",
"textStatus": "error",
"xhr": {
"readyState": 4,
"responseText": "
PHP Notice 'yii\base\ErrorException' with message 'Trying to get property 'id' of non-object' \n\nin /var/www/coinsence/protected/modules/xcoin/controllers/ProductController.php:61\n\nStack trace:\n#0 /var/www/coinsence/protected/modules/xcoin/controllers/ProductController.php(61): yii\base\ErrorHandler->handleError(8, 'Trying to get p...', '/var/www/coinse...', 61, Array)\n#1 [internal function]: humhub\modules\xcoin\controllers\ProductController->actionNew('28')\n#2 /var/www/coinsence/protected/vendor/yiisoft/yii2/base/InlineAction.php(57): call_user_func_array(Array, Array)\n#3 /var/www/coinsence/protected/vendor/yiisoft/yii2/base/Controller.php(157): yii\base\InlineAction->runWithParams(Array)\n#4 /var/www/coinsence/protected/vendor/yiisoft/yii2/base/Module.php(528): yii\base\Controller->runAction('new', Array)\n#5 /var/www/coinsence/protected/vendor/yiisoft/yii2/web/Application.php(103): yii\base\Module->runAction('xcoin/product/n...', Array)\n#6 /var/www/coinsence/protected/vendor/yiisoft/yii2/base/Application.php(386): yii\web\Application->handleRequest(Object(humhub\components\Request))\n#7 /var/www/coinsence/index.php(31): yii\base\Application->run()\n#8 {main}
",
"status": 500,
"statusText": "Internal Server Error"
},
"dataType": "html",
"html": "
PHP Notice 'yii\base\ErrorException' with message 'Trying to get property 'id' of non-object' \n\nin /var/www/coinsence/protected/modules/xcoin/controllers/ProductController.php:61\n\nStack trace:\n#0 /var/www/coinsence/protected/modules/xcoin/controllers/ProductController.php(61): yii\base\ErrorHandler->handleError(8, 'Trying to get p...', '/var/www/coinse...', 61, Array)\n#1 [internal function]: humhub\modules\xcoin\controllers\ProductControl...",
"error": {},
"errorThrown": "Internal Server Error",
"validationError": false
}